I have a Lenovo Ideapad 14'' 100S IBR-14'' Intel Celeron CPU N3060 @ 1.60GHz, 32GB SSD, 4GB RAM running FreeBSD 12.0.

I am trying to setup sound on it. I set it up in /boot/loader.conf as:

# load sound driver
# load mixer

However, when trying to playing sound both in youtube or in the command line, I get this error, either when trying to use the Speaker or the Headphones channel:

pcm0: chn_write(): pcm0:virtual:dsp0.vp0: play interrupt timeout, channel dead


pcm1: chn_write(): pcm1:virtual:dsp1.vp0: play interrupt timeout, channel dead

The mixer seems to be ok:

# mixer
Mixer vol  is currently set to 100:100
Mixer pcm  is currently set to 100:100

To see the available outputs:

$ cat /dev/sndstat
Installed devices:
pcm0: <Realtek ALC269 (Right Analog)> (play/rec)
pcm1: <Realtek ALC269 (Internal Analog)> (play/rec) default
pcm2: <Intel (0x2883) (HDMI/DP 8ch)> (play)
No devices installed from userspace.

What to do?


To get the sound working, according to a similar post in the FreeBSD forums, you have to do:

sudo sysctl dev.hdac.0.polling=1

After this change, the sound started working while using the headphone jack (Right Analog).

To output sound from the internal speakers (Internal Analog), I had to do:

sudo sysctl hw.snd.default_unit=1

To have these configurations at boot time, add them to /etc/sysctl.conf:


See also:

FreeBSD: no automatic switching between sound in speaker and built-in headphones jack

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.